656143052 has 12 divisors (see below), whose sum is σ = 1179284400. Its totient is φ = 319204656.

The previous prime is 656143043. The next prime is 656143069. The reversal of 656143052 is 250341656.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2216552 + ... + 2216847.

It is an arithmetic number, because the mean of its divisors is an integer number (98273700).

Almost surely, 2^656143052 is an apocalyptic number.

It is an amenable number.

656143052 is a deficient number, since it is larger than the sum of its proper divisors (523141348).

656143052 is a wasteful number, since it uses less digits than its factorization.

656143052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4433440 (or 4433438 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 656143052 is about 25615.2894186265. The cubic root of 656143052 is about 868.9594517874.

The spelling of 656143052 in words is "six hundred fifty-six million, one hundred forty-three thousand, fifty-two".